In addition to the minor adjustment in Carpenter's base salary, the Bills also kept Carpenter's $250K roster bonus that was due to him this week. The kicker can earn the money back if he's on the 53-man roster the first week of the season.

In all, the Bills didn't save much salary cap in reworking Carpenter's deal.

Carpenter is coming off of his worst season as Buffalo's kicker. In 2015, Carpenter converted 23-of-37 field goal attempts (85.2%). His was his lowest field goal percentage during his three seasons with the Bills. In 2014, Carpenter converted on 89.5 percent of his field goal attempts (34-of-38) and was even better in his first season with Buffalo. Carpenter made 91.7 percent (33-of-36) of his field goals in 2013.

The kicker also struggled on extra point attempts in 2015. Carpenter missed six XP attempts, going 34-of-40 on the season.